drm/i915: Add 180 degree sprite rotation support
The sprite planes (in fact all display planes starting from gen4)
support 180 degree rotation. Add the relevant low level bits to the
sprite code to make use of that feature.
The upper layers are not yet plugged in.
v2: HSW handles the rotated buffer offset automagically
v3: BDW also handles the rotated buffer offset automagically
Testcase: igt/kms_rotation_crc
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Sagar Kamble <sagar.a.kamble@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index d34a569..f4d10c4 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -164,6 +164,7 @@
sprctl &= ~SP_PIXFORMAT_MASK;
sprctl &= ~SP_YUV_BYTE_ORDER_MASK;
sprctl &= ~SP_TILED;
+ sprctl &= ~SP_ROTATE_180;
switch (fb->pixel_format) {
case DRM_FORMAT_YUYV:
@@ -236,6 +237,14 @@
fb->pitches[0]);
linear_offset -= sprsurf_offset;
+ if (intel_plane->rotation == BIT(DRM_ROTATE_180)) {
+ sprctl |= SP_ROTATE_180;
+
+ x += src_w;
+ y += src_h;
+ linear_offset += src_h * fb->pitches[0] + src_w * pixel_size;
+ }
+
atomic_update = intel_pipe_update_start(intel_crtc, &start_vbl_count);
intel_update_primary_plane(intel_crtc);
@@ -365,6 +374,7 @@
sprctl &= ~SPRITE_RGB_ORDER_RGBX;
sprctl &= ~SPRITE_YUV_BYTE_ORDER_MASK;
sprctl &= ~SPRITE_TILED;
+ sprctl &= ~SPRITE_ROTATE_180;
switch (fb->pixel_format) {
case DRM_FORMAT_XBGR8888:
@@ -427,6 +437,18 @@
pixel_size, fb->pitches[0]);
linear_offset -= sprsurf_offset;
+ if (intel_plane->rotation == BIT(DRM_ROTATE_180)) {
+ sprctl |= SPRITE_ROTATE_180;
+
+ /* HSW and BDW does this automagically in hardware */
+ if (!IS_HASWELL(dev) && !IS_BROADWELL(dev)) {
+ x += src_w;
+ y += src_h;
+ linear_offset += src_h * fb->pitches[0] +
+ src_w * pixel_size;
+ }
+ }
+
atomic_update = intel_pipe_update_start(intel_crtc, &start_vbl_count);
intel_update_primary_plane(intel_crtc);
@@ -572,6 +594,7 @@
dvscntr &= ~DVS_RGB_ORDER_XBGR;
dvscntr &= ~DVS_YUV_BYTE_ORDER_MASK;
dvscntr &= ~DVS_TILED;
+ dvscntr &= ~DVS_ROTATE_180;
switch (fb->pixel_format) {
case DRM_FORMAT_XBGR8888:
@@ -629,6 +652,14 @@
pixel_size, fb->pitches[0]);
linear_offset -= dvssurf_offset;
+ if (intel_plane->rotation == BIT(DRM_ROTATE_180)) {
+ dvscntr |= DVS_ROTATE_180;
+
+ x += src_w;
+ y += src_h;
+ linear_offset += src_h * fb->pitches[0] + src_w * pixel_size;
+ }
+
atomic_update = intel_pipe_update_start(intel_crtc, &start_vbl_count);
intel_update_primary_plane(intel_crtc);
@@ -896,6 +927,9 @@
max_scale = intel_plane->max_downscale << 16;
min_scale = intel_plane->can_scale ? 1 : (1 << 16);
+ drm_rect_rotate(&src, fb->width << 16, fb->height << 16,
+ intel_plane->rotation);
+
hscale = drm_rect_calc_hscale_relaxed(&src, &dst, min_scale, max_scale);
BUG_ON(hscale < 0);
@@ -934,6 +968,9 @@
drm_rect_width(&dst) * hscale - drm_rect_width(&src),
drm_rect_height(&dst) * vscale - drm_rect_height(&src));
+ drm_rect_rotate_inv(&src, fb->width << 16, fb->height << 16,
+ intel_plane->rotation);
+
/* sanity check to make sure the src viewport wasn't enlarged */
WARN_ON(src.x1 < (int) src_x ||
src.y1 < (int) src_y ||
@@ -1311,6 +1348,7 @@
intel_plane->pipe = pipe;
intel_plane->plane = plane;
+ intel_plane->rotation = BIT(DRM_ROTATE_0);
possible_crtcs = (1 << pipe);
ret = drm_plane_init(dev, &intel_plane->base, possible_crtcs,
&intel_plane_funcs,
